⚠️ This information is for educational purposes. Always verify current regulations with the Modesto Planning Department before starting your project.
Modesto ADU Regulations at a Glance
Here are the key zoning rules for Accessory Dwelling Units in Modesto, California. These regulations apply as of 2026.
| Regulation | Requirement |
|---|---|
| Maximum Size | 1,200 sq ft |
| Property Setbacks | 4 ft rear, 4 ft side |
| Extra Parking Required | Not required |
| Owner Occupancy | Not required |
Additional Local Requirements
- ADU allowed by right in residential zones
- Minimum 150 sq ft for detached ADUs
- Can be attached or detached
- Permit fees vary by size
📥 Get the Complete Modesto ADU Cheat Sheet
To get the step-by-step permit checklist and the official local contacts, download the Complete Modesto ADU Cheat Sheet.
Download the Modesto PDF Guide — $12Frequently Asked Questions About ADUs in Modesto
Can I build an ADU in Modesto?
Yes, Modesto allows ADUs under California state law and local zoning ordinances. [ADDITIONAL_FAQ_1]
How big can my ADU be in Modesto?
The maximum size for an ADU in Modesto is 1,200 square feet, subject to setback and lot coverage requirements.
Do I need a permit for an ADU in Modesto?
Yes, all ADUs require a building permit from the Modesto Building & Safety Department.
Looking for other cities?